US823524A - Differential-gear casing. - Google Patents

Description

TENTED-JiJNE 19, 1906. A B.P.GRAYV." DIFFERENTIAL GBAR'GASING.

APPLICATION rum JAN. 2, 1904. RENEWED r113. 19. 1906.

T No. 823,524.

UNITE snares PATENT orinon.

annnr r. GRAY, OFCINCINNA'TI, .onro, Assienoa TO GRAY MANU? FAGTURING COMPANY or DETROIT, or DETROIT, MICHIGAN, A.

CORPORATION OF'MIOHIGAN.

DIFFERENTIAL-GEAR CASING- U Application filed January Z, 1904-' .To all whom it mlay concern:

- Be it known thatl, EMMET P. GRAY, a citi-' zen of'the United States, residing at Cincinnati, in the county of Hamilton and State of Oh'id, have invented certain new and useful Improvements in Differential Gear Casings,

of which the following is a full, clear, and exact description; referencebeing had to the accompanymg drawings, forming part of this specification.

My invention relates to casings or housin s for differential gears, and is particulary Y adapted for use in automobile construction I opened and on an enlarged'scale;

where divided shafts are used and it is essen-' tialthat the same be ke t at all times in perfect'alineinent; and it as for itsobject the ble without disturbing the a justment of the prarts or requiring the removal ofthe casing 0m the machine, as is necessary with the casings now employed.

The novelty of my invention will be'hereinafter more fully set forth, and specifically pointed out in the claims.

In the accompanying drawings, Figure l is a side elevation of a casin embodyin my invention and shown applied to'a rear ax e for an automobile; Fig. 2 is a broken sectional elevation of the casing, showing the same'partly Fig. 3 is a broken side elevation similar to Fig. 1, show ing'the casing adapted for a bevel-gear drive. Fig. 4 is an end elevation of the tube forming one-half of the casing. Fig;,5 is a side view of the tube, the same being out ready for spreading to the position shown in Fig. 4.

The same letters of reference are used to indicate identical parts in all the figures.

Heretofore in .differential-gear-case construction the case has been made of two cupped disks, which have been either screwed together or flanged a d bolted together at their adjoining faces'a d which have been provided with eentralt threaded apertures nto which tubes have been screwed and sometimes brazed. These'tubes have their axes coincident, and in them is journaled the shaft carrying the rear wheels. This shaft is usually split or divided a the center of the gear-easing, and the di erential gear em- Specification bf Letters Patent.

Renewed February 19,1908. Serial No. 801,913.

to suit any requirements.

With the above-described -con-. structlon there has always been more or less trouble arisin fromthe difficulty in etting where they are joine to the two halves of the casing, and in repairing the difierenti'al gear and sometimes even to adjust the bearings of [theshaft it is nearly always necessary to remove. the whole casing and its inclosed gearing and shafts entirely from the machine, thus;

entailing a great dea of labor and disturbing of adjustments.- Under my construction PatenteoiJune 19, 1906.,

braces and drives these two adjacent ends of the shaft.

this is entirely obviated, and I willnow prop ceed to describe it in detail. a

I provide tubes A, which may be seamless tubing, welded tubin 'or tubin formed of sheet metal rolled an brazed. hese tubes being split are inserted in any suitable press orformer and the split portions upset or spread to form a frame, as shown in Fig. 4. The outer ends of the arms B fo'rmingthis frame are provided with bolt-holes b for bolting the two adj acent frames together. Where heavy tubing inclose the differential gearing, the forming and joining of these two frames will be all that is necessary toprovide a very efficient casing and one which is perfectly rigid and Without screwed or brazed joints, besides being exlines to coincide with the lines of the frame on the main tubing and brazed or suitably secured tothe frame on the main tubing to These tubes after is used and where it is not desired to entirely reinforce said frame, as will be readily understood. I

Where it is desired to entirely inclose the ICC differential gearing for the purpose of. prothe same cupped stampings or casttectil/g may he slipped over the framesand ins bo ted together, either with the same bolts that hold the frame or in any other suitable manner, and these stampings or castings C may have reinforcing-ribs c, as'shown in section in Fig. 2, on. the right-hand side of the figure or may be made plane, as shown on the left-hand side of said figure.

The apertures D in Fig. 2 indicate openings for the admission of the chain where a of a journal E, as clear] chain-drive is used. Where a bevel-gear drive is used, the cups C may each carry half shown in Fi 3. This ournal E is for the riving-shaft, which carries the drivingl)evi. l-gear, which in turn meshes with any suitable bcvel-gea1 mounted upon the differential within the casing, as will be readily understood.

As clearly shown in Fig. 2, 'where the cups C are employed to inclose the gearing should anything reguire attention within the casing, such as the ifierential gear or the axle-bean,

ing, it is only necessary tounbolt the cups and slip them back away from the frames B, when the whole interior of the casing will be exposed without requiring the removal of the casing and its inclosed gearing and shafts from the machine and without requiring the disturbing of any of the adjustments of the bearings or any other parts of the. machine.

While this form of construction is particularl adapted for automobile work and more Having thus fully described my invention, I claim '1; In gear-casing construction and in combination, tubes adapted to inclose shafts, said tubes having one end split, said split portions being spread to form frames embracing the adjacent ends of said shafts, and means for securing said frames together to maintain said tubes'in proper alinement, substantially as described.

2. In gear-casing, construction and in combination, tubes adapted to inclose shafts,

said tubes having one end split, said split portions being spread to form frames embracing the adjacent ends of said shafts, re-

inforcing-frames secured to said first-named frames, and means for securing said frames together to maintain said tubes in. proper alinement, substantially as described 3. In gear-casing construction and in combination, tubes adapted to inclose shafts, said tubes having one end split, said split portions being spread to form frames embracing the adjacent ends of said shafts, housings adapted to slip over and inclose said frames and provided. with an'aperture for the transmission of power theretlrrough, and means forsecuring said frames and. housings together to maintain said tubes in proper alinement, substantially as described 4. A gear-casing construction comprising alined tubular portions and an intermediate construction formed from said tubular portions by splitting and expanding the same.

5. A gear-casing comprising alined tubular portions having their adjacent ends split and spread to form frames, and means to secure said frames together.

EMMET P. GRAY.

Witnesses EDWARD PECK, EDWARD S ssDonF.

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